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Kong L, Peng H, Wei Q, Liang Q, Zhao J, Zou B. Efficient tunable white emission and multiple reversible photoluminescence switching in organic Tin(IV) chlorides via regulating the host lattice environment of antimony ions for multifunctional applications. J Colloid Interface Sci 2024; 666:560-571. [PMID: 38613978 DOI: 10.1016/j.jcis.2024.04.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/25/2024] [Accepted: 04/08/2024] [Indexed: 04/15/2024]
Abstract
The host lattice environments of Sb3+ has a great influence on its photophysical properties. Here, we synthesized three zero-dimensional organic metal halides of (TPA)2SbCl5 (1), Sb3+-doped (TPA)SnCl5(H2O)·2H2O (Sb3+-2), and Sb3+-doped (TPA)2SnCl6 (Sb3+-3). Compared with the intense orange emission of 1, Sb3+-3 has smaller lattice distortion, thus effectively suppressing the exciton transformation from singlet to triplet self-trapped exciton (STE) states, which makes Sb3+-3 has stronger singlet STE emission and further bring a white emission with a photoluminescence quantum efficiency (PLQE) of 93.4%. Conversely, the non-emission can be observed in Sb3+-2 even though it has a similar [SbCl5]2- structure to 1, which should be due to its indirect bandgap characteristics and the effective non-radiative relaxation caused by H2O in the lattice. Interestingly, the non-emission of Sb3+-2 can convert into the bright emission of Sb3+-3 under TPACl DMF solution treatment. Meanwhile, the white emission under 315 nm excitation of Sb3+-3 can change into orange emission upon 365 nm irradiation, and the luminescence can be further quenched by the treatment of HCl. Therefore, a triple-mode reversible luminescence switch of off-onI-onII-off can be achieved. Finally, we demonstrated the applications of Sb3+-doped compounds in single-component white light illumination, latent fingerprint detection, fluorescent anti-counterfeiting, and information encryption.
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Affiliation(s)
- Linghang Kong
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Hui Peng
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
| | - Qilin Wei
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Qihua Liang
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Jialong Zhao
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
| | - Bingsuo Zou
- State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China.
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2
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Arslanova K, Ganswindt P, Lorenzen T, Kostyurina E, Karaghiosoff K, Nickel B, Müller-Caspary K, Urban AS. Synthesis of Cs 3Cu 2I 5 Nanocrystals in a Continuous Flow System. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403572. [PMID: 39004852 DOI: 10.1002/smll.202403572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/19/2024] [Indexed: 07/16/2024]
Abstract
Achieving the goal of generating all of the world's energy via renewable sources and significantly reducing the energy usage will require the development of novel, abundant, nontoxic energy conversion materials. Here, a cost-efficient and scalable continuous flow synthesis of Cs3Cu2I5 nanocrystals is developed as a basis for the rapid advancement of novel nanomaterials. Ideal precursor solutions are obtained through a novel batch synthesis, whose product served as a benchmark for the subsequent flow synthesis. Realizing this setup enabled a reproducible fabrication of Cs3Cu2I5 nanocrystals. The effect of volumetric flow rate and temperature on the final product's morphology and optical properties are determined, obtaining 21% quantum yield with the optimal configuration. Consequently, the size and morphology of the nanocrystals can be tuned with far more precision and in a much broader range than previously achievable. The flow setup is readily applicable to other relevant nanomaterials. It should enable a rapid determination of a material's potential and subsequently optimize its desired properties for renewable energy generation or efficient optoelectronics.
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Affiliation(s)
- Ksenija Arslanova
- Nanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität München, Königinstr. 10, 80539, München, Germany
| | - Patrick Ganswindt
- Nanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität München, Königinstr. 10, 80539, München, Germany
| | - Tizian Lorenzen
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität München, Butenandtstr. 11, 81377, München, Germany
| | - Ekaterina Kostyurina
- Soft Condensed Matter Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, 80539, München, Germany
| | - Konstantin Karaghiosoff
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr.5-13, 81377, München, Germany
| | - Bert Nickel
- Soft Condensed Matter Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität München, Geschwister-Scholl-Platz 1, 80539, München, Germany
| | - Knut Müller-Caspary
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-Universität München, Butenandtstr. 11, 81377, München, Germany
| | - Alexander S Urban
- Nanospectroscopy Group and Center for NanoScience, Faculty of Physics, Ludwig-Maximilians-Universität München, Königinstr. 10, 80539, München, Germany
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3
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Lin S, Ma Z, Ji X, Zhou Q, Chu W, Zhang J, Liu Y, Han Y, Lian L, Jia M, Chen X, Wu D, Li X, Zhang Y, Shan C, Shi Z. Efficient Large-Area (81 cm 2) Ternary Copper Halides Light-Emitting Diodes with External Quantum Efficiency Exceeding 13% via Host-Guest Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2313570. [PMID: 38693828 DOI: 10.1002/adma.202313570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 04/30/2024] [Indexed: 05/03/2024]
Abstract
Ternary copper (Cu) halides are promising candidates for replacing toxic lead halides in the field of perovskite light-emitting diodes (LEDs) toward practical applications. However, the electroluminescent performance of Cu halide-based LEDs remains a great challenge due to the presence of serious nonradiative recombination and inefficient charge transport in Cu halide emitters. Here, the rational design of host-guest [dppb]2Cu2I2 (dppb denotes 1,2-bis[diphenylphosphino]benzene) emitters and its utility in fabricating efficient Cu halide-based green LEDs that show a high external quantum efficiency (EQE) of 13.39% are reported. The host-guest [dppb]2Cu2I2 emitters with mCP (1,3-bis(N-carbazolyl)benzene) host demonstrate a significant improvement of carrier radiative recombination efficiency, with the photoluminescence quantum yield increased by nearly ten times, which is rooted in the efficient energy transfer and type-I energy level alignment between [dppb]2Cu2I2 and mCP. Moreover, the charge-transporting mCP host can raise the carrier mobility of [dppb]2Cu2I2 films, thereby enhancing the charge transport and recombination. More importantly, this strategy enables a large-area prototype LED with a record-breaking area up to 81 cm2, along with a decent EQE of 10.02% and uniform luminance. It is believed these results represent an encouraging stepping stone to bring Cu halide-based LEDs from the laboratory toward commercial lighting and display panels.
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Affiliation(s)
- Shuailing Lin
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xinzhen Ji
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Qicong Zhou
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Weihong Chu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Jibin Zhang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Ying Liu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yanbing Han
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Linyuan Lian
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
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4
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Xu H, Li J, Luo T, Zhang W, Jin H, Gao Y, He T. Nonlinear Optical Properties of Cs 2AgIn 1-xBi xCl 6 Single Crystals. J Phys Chem Lett 2024; 15:5848-5853. [PMID: 38795047 DOI: 10.1021/acs.jpclett.4c00986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2024]
Abstract
Lead-free double perovskites offer enhanced stability and lower toxicity compared to their lead-based counterparts. Dual B-site cations can introduce elemental and structural diversity into double perovskite materials, enabling fine-tuning of the optical properties. However, the study of the nonlinear optical (NLO) properties of lead-free double perovskites is still nascent, hindering their relevant potential applications. Based on this, this work synthesizes a series of Cs2AgIn1-xBixCl6 (x = 0, 0.1, 0.25, 0.75, 1) single crystals, with the aim to explore the impact of composition on their NLO properties. Interestingly, Cs2AgInCl6 shows surface defect-induced second harmonic generation. With increasing Bi3+ concentration, the multiphoton absorption coefficients of Cs2AgIn1-xBixCl6 single crystals increase as a result of increasing state density. This work is helpful to understand well the NLO properties of lead-free double perovskites, laying a foundation for the development of related applications.
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Affiliation(s)
- Hai Xu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Junzi Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Tai Luo
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Wenjing Zhang
- SZU-NUS Collaborative Innovation Center for Optoelectronic Science & Technology, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Hao Jin
- College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yang Gao
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Tingchao He
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
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5
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Li X, Chen X, Jiang H, Wang M, Lin S, Ma Z, Wang H, Ji H, Jia M, Han Y, Zhu J, Pan G, Wu D, Li X, Xu W, Liu Y, Shan CX, Shi Z. Efficient Deep-Blue Light-Emitting Diodes from Highly Luminescent Eu 2+-Doped Alkali Metal Halide Nanocrystals via Lattice Field Modulation. NANO LETTERS 2024; 24:6601-6609. [PMID: 38787739 DOI: 10.1021/acs.nanolett.4c01155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
Lead-halide perovskite nanocrystals (NCs) are promising for fabricating deep-blue (<460 nm) light-emitting diodes (LEDs), but their development is plagued by low electroluminescent performance and lead toxicity. Herein, the synthesis of 12 kinds of highly luminescent and eco-friendly deep-blue europium (Eu2+)-doped alkali-metal halides (AX:Eu2+; A = Na+, K+, Rb+, Cs+; X = Cl-, Br-, I-) NCs is reported. Through adjustment of the coordination environment, efficient deep-blue emission from Eu-5d → Eu-4f transitions is realized. The representative CsBr:Eu2+ NCs exhibit a high photoluminescence quantum yield of 91.1% at 441 nm with a color coordinate at (0.158, 0.023) matching with the Rec. 2020 blue specification. Electrically driven deep-blue LEDs from CsBr:Eu2+ NCs are demonstrated, achieving a record external quantum efficiency of 3.15% and half-lifetime of ∼1 h, surpassing the reported metal-halide deep-blue NCs-based LEDs. Importantly, large-area LEDs with an emitting area of 12.25 cm2 are realized with uniform emission, representing a milestone toward commercial display applications.
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Affiliation(s)
- Xu Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Huifang Jiang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Meng Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Shuailing Lin
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Hui Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Huifang Ji
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Yanbing Han
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Jinyang Zhu
- State Center for International Cooperation on Designer Low-Carbon & Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
| | - Gencai Pan
- School of Physics and Electronics and Institute of Micro/Nano Photonic Materials and Applications, Henan University, Kaifeng 475004, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
| | - Ying Liu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Chong-Xin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
- Laboratory of Zhongyuan Light, School of Physics, Zhengzhou University, 100 Kexue Avenue, Zhengzhou 450001, China
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Chen CH, Yu MH, Wang YY, Tseng YC, Chao IH, Ni IC, Lin BH, Lu YJ, Chueh CC. Enhancing the Performance of 2D Tin-Based Pure Red Perovskite Light-Emitting Diodes through the Synergistic Effect of Natural Antioxidants and Cyclic Molecular Additives. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307774. [PMID: 38200683 DOI: 10.1002/smll.202307774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/27/2023] [Indexed: 01/12/2024]
Abstract
Tin (Sn)-based perovskites are being investigated in many optoelectronic applications given their similar valence electron configuration to that of lead-based perovskites and the potential environmental hazards of lead-based perovskites. However, the formation of high-quality Sn-based perovskite films faces several challenges, mainly due to the easy oxidation of Sn2+ to Sn4+ and the fast crystallization rate. Here, to develop an environmentally friendly process for Sn-based perovskite fabrication, a series of natural antioxidants are studied as additives and ascorbic acid (VitC) is found to have a superior ability to inhibit the oxidation problem. A common cyclic molecule, 18-Crown-6, is further added as a second additive, which synergizes with VitC to significantly reduce the nonradiative recombination pathways in the PEA2SnI4 film. This synergistic effect greatly improves the performance of 2D red Sn-based PeLED, with a maximum external quantum efficiency of 1.87% (≈9 times that of the pristine device), a purer color, and better bias stability. This work demonstrates the potential of the dual-additive approach in enhancing the performance of 2D Sn-based PeLEDs, while the use of these environmentally friendly additives contributes to their future sustainability.
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Affiliation(s)
- Chiung-Han Chen
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Ming-Hsuan Yu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Yen-Yu Wang
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Yu-Cheng Tseng
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - I-Hsiang Chao
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - I-Chih Ni
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, 10617, Taiwan
| | - Bi-Hsuan Lin
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Yu-Jung Lu
- Research Center for Applied Sciences, Academia Sinica, Taipei, 11529, Taiwan
| | - Chu-Chen Chueh
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
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7
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Pan G, Li M, Yu X, Zhou Y, Xu M, Yang X, Xu Z, Li Q, Feng H. Spectrally Tunable Lead-Free Perovskite Rb 2ZrCl 6:Te for Information Encryption and X-ray Imaging. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2530. [PMID: 38893794 PMCID: PMC11173108 DOI: 10.3390/ma17112530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 05/19/2024] [Accepted: 05/22/2024] [Indexed: 06/21/2024]
Abstract
A series of lead-free Rb2ZrCl6:xTe4+ (x = 0%, 0.1%, 0.5%, 1.0%, 2.0%, 3.0%, 5.0%, 10.0%) perovskite materials were synthesized through a hydrothermal method in this work. The substitution of Te4+ for Zr in Rb2ZrCl6 was investigated to examine the effect of Te4+ doping on the spectral properties of Rb2ZrCl6 and its potential applications. The incorporation of Te4+ induced yellow emission of triplet self-trapped emission (STE). Different luminescence wavelengths were regulated by Te4+ concentration and excitation wavelength, and under a low concentration of Te4+ doping (x ≤ 0.1%), different types of host STE emission and Te4+ triplet state emission could be achieved through various excitation energies. These luminescent properties made it suitable for applications in information encryption. When Te4+ was doped at high concentrations (x ≥ 1%), yellow triplet state emission of Te4+ predominated, resulting in intense yellow emission, which stemmed from strong exciton binding energy and intense electron-phonon coupling. In addition, a Rb2ZrCl6:2%Te4+@RTV scintillating film was fabricated and a spatial resolution of 3.7 lp/mm was achieved, demonstrating the potential applications of Rb2ZrCl6:xTe4+ in nondestructive detection and bioimaging.
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Affiliation(s)
| | | | | | | | | | | | | | - Qianli Li
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China; (G.P.); (M.L.); (X.Y.); (Y.Z.); (M.X.); (X.Y.); (Z.X.)
| | - He Feng
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China; (G.P.); (M.L.); (X.Y.); (Y.Z.); (M.X.); (X.Y.); (Z.X.)
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8
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Yang S, Tang Z, Qu B, Xiao L, Chen Z. Crown-Assisted CsCu 2I 3 Growth and Trap Passivation for Perovskite Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38608287 DOI: 10.1021/acsami.4c01048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
Copper (Cu)-based perovskites are promising for lead-free perovskite light-emitting diodes (PeLEDs). However, it remains a significant challenge to achieve high performance devices due to the nonradiative loss caused by the disordered crystallization and lack of passivation. Crown ethers are known to form host-guest complexes by the interaction between C-O-C groups and certain cations, and 18-crown-6 (18C6) with an appropriate complementary size can interact with Cs+ and Cu+ cations. Herein, we studied the interaction between CsCu2I3 and two crowns with the same cyclic size, 18C6 and dibenzo-18-crown-6 (D18C6). Particularly, D18C6 can reduce the nonradiative recombination rate of CsCu2I3 film by passivating the defects and optimizing the film morphology effectively. The room mean square (RMS) decreased from 5.06 to 2.95 nm, and the PLQY was promoted from 4.71% to 19.9%. Besides, D18C6 can also decrease the barrier of hole injection. The PeLEDs based on D18C6-modified CsCu2I3 realized noticeable improvement with a maximum luminance and EQE of 583 cd/m2 and 0.662%, respectively.
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Affiliation(s)
- Shuang Yang
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China
| | - Zhenyu Tang
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China
| | - Bo Qu
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China
| | - Lixin Xiao
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China
| | - Zhijian Chen
- State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871, P. R. China
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9
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Zhang D, Zhu M, He Y, Cao Q, Gao Y, Li H, Lu G, Cui Q, Shen Y, He H, Dai X, Ye Z. Efficient and bright broadband electroluminescence based on environment-friendly metal halide nanoclusters. LIGHT, SCIENCE & APPLICATIONS 2024; 13:82. [PMID: 38584197 PMCID: PMC10999448 DOI: 10.1038/s41377-024-01427-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 03/12/2024] [Accepted: 03/13/2024] [Indexed: 04/09/2024]
Abstract
Broadband electroluminescence based on environment-friendly emitters is promising for healthy lighting yet remains an unprecedented challenge to progress. The copper halide-based emitters are competitive candidates for broadband emission, but their high-performance electroluminescence shows inadequate broad emission bandwidth of less than 90 nm. Here, we demonstrate efficient ultra-broadband electroluminescence from a copper halide (CuI) nanocluster single emitter prepared by a one-step solution synthesis-deposition process, through dedicated design of ligands and subtle selection of solvents. The CuI nanocluster exhibits high rigidity in the excitation state as well as dual-emissive modes of phosphorescence and temperature-activated delayed fluorescence, enabling the uniform cluster-composed film to show excellent stability and high photoluminescent efficiency. In consequence, ultra-broadband light-emitting diodes (LEDs) present nearly identical performance in an inert or air atmosphere without encapsulation and outstanding high-temperature operation performance, reaching an emission full width at half maximum (FWHM) of ~120 nm, a peak external quantum efficiency of 13%, a record maximum luminance of ~50,000 cd m-2, and an operating half-lifetime of 137 h at 100 cd m-2. The results highlight the potential of copper halide nanoclusters for next-generation healthy lighting.
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Affiliation(s)
- Dingshuo Zhang
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Meiyi Zhu
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials and Engineering Research Centre of Zhejiang Province, Institute of Wenzhou, Zhejiang University, 325006, Wenzhou, China
| | - Yifan He
- Wenzhou XINXINTAIJING Tech. Co. Ltd., 325006, Wenzhou, China
| | - Qingli Cao
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Yun Gao
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Hongjin Li
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Guochao Lu
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Qiaopeng Cui
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
| | - Yongmiao Shen
- Department of Chemistry, Zhejiang Sci-Tech University, 310018, Hangzhou, China
| | - Haiping He
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials and Engineering Research Centre of Zhejiang Province, Institute of Wenzhou, Zhejiang University, 325006, Wenzhou, China
- Wenzhou XINXINTAIJING Tech. Co. Ltd., 325006, Wenzhou, China
| | - Xingliang Dai
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China.
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials and Engineering Research Centre of Zhejiang Province, Institute of Wenzhou, Zhejiang University, 325006, Wenzhou, China.
- Wenzhou XINXINTAIJING Tech. Co. Ltd., 325006, Wenzhou, China.
| | - Zhizhen Ye
- School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, 310027, Hangzhou, China.
- Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials and Engineering Research Centre of Zhejiang Province, Institute of Wenzhou, Zhejiang University, 325006, Wenzhou, China.
- Wenzhou XINXINTAIJING Tech. Co. Ltd., 325006, Wenzhou, China.
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10
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Dan T, He S, Zhang L, Xia B, Cao N, Chu X, Lu T, Zhu Y, Xie G, Zhao F. Highly stable mixed-phase Cs-Cu-I films with tunable optoelectronic properties for UVB photodetector applications. OPTICS EXPRESS 2024; 32:9227-9236. [PMID: 38571161 DOI: 10.1364/oe.505535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/01/2024] [Indexed: 04/05/2024]
Abstract
Ultraviolet (UV) photodetector plays an important role in military, civilian and people's daily life, and is an indispensable part of spectral detection. However, photodetectors target at the UVB region (280-320 nm) are rarely reported, and the devices detected by medium-wave UV light generally have problems such as low detection rate, low sensitivity, and poor stability, which are difficult to meet the market application needs. Herein, Cs-Cu-I films with mixed-phase have been prepared by vacuum thermal evaporation. By adjusting the proportion of evaporation sources (CsI and CuI), the optical bandgaps of mixed-phase Cs-Cu-I films can be tuned between 3.7 eV and 4.1 eV. This absorption cut-off edge is exactly at both ends of the UVB band, which indicating its potential application in the field of UVB detection. Finally, the photodetectors based on Cs-Cu-I/n-Si heterojunction are fabricated. The photodetector shows good spectral selectivity for UVB band, and has a photoresponsivity of 22 mA/W, a specific detectivity of 1.83*1011 Jones, an EQE over 8.7% and an on/off ratio above 20.
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11
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Meng W, Wang C, Xu G, Luo G, Deng Z. Alkylammonium Halides for Phase Regulation and Luminescence Modulation of Cesium Copper Iodide Nanocrystals for Light-Emitting Diodes. Molecules 2024; 29:1162. [PMID: 38474674 DOI: 10.3390/molecules29051162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/26/2024] [Accepted: 02/08/2024] [Indexed: 03/14/2024] Open
Abstract
All-inorganic cesium copper halide nanocrystals have attracted extensive attention due to their cost-effectiveness, low toxicity, and rich luminescence properties. However, controlling the synthesis of these nanocrystals to achieve a precise composition and high luminous efficiency remains a challenge that limits their future application. Herein, we report the effect of oleylammonium iodide on the synthesis of copper halide nanocrystals to control the composition and phase and modulate their photoluminescence (PL) quantum yields (QYs). For CsCu2I3, the PL peak is centered at 560 nm with a PLQY of 47.3%, while the PL peak of Cs3Cu2I5 is located at 440 nm with an unprecedently high PLQY of 95.3%. Furthermore, the intermediate-state CsCu2I3/Cs3Cu2I5 heterostructure shows white light emission with a PLQY of 66.4%, chromaticity coordinates of (0.3176, 0.3306), a high color rendering index (CRI) of 90, and a correlated color temperature (CCT) of 6234 K, indicating that it is promising for single-component white-light-emitting applications. The nanocrystals reported in this study have excellent luminescence properties, low toxicity, and superior stability, so they are more suitable for future light-emitting applications.
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Affiliation(s)
- Wen Meng
- State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
| | - Chuying Wang
- State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
| | - Guangyong Xu
- State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
| | - Guigen Luo
- State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
| | - Zhengtao Deng
- State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China
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12
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Li X, Lou B, Chen X, Wang M, Jiang H, Lin S, Ma Z, Jia M, Han Y, Tian Y, Wu D, Xu W, Li X, Ma C, Shi Z. Deep-blue narrow-band emissive cesium europium bromide perovskite nanocrystals with record high emission efficiency for wide-color-gamut backlight displays. MATERIALS HORIZONS 2024; 11:1294-1304. [PMID: 38168978 DOI: 10.1039/d3mh01631e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Lead halide perovskite nanocrystals (NCs) are highly promising for backlighting display applications due to their high photoluminescence quantum yields (PLQYs) and wide color gamut values. However, the practical applications of blue emitters are limited due to the toxicity of lead, unstable structure, and unsatisfactory PLQY. Herein, we report the successful synthesis of divalent europium-based perovskite CsEuBr3 NCs using a modified hot injection method. By optimizing the reaction conditions, the CsEuBr3 NCs display a deep-blue emission at 443 nm with a full width at half maximum (FWHM) of 28.5 nm, a color purity of 99.61%, and a record high PLQY of 93.51% for deep-blue narrow-band emissive lead-free perovskite NCs as far as we know. The emission mechanism of CsEuBr3 NCs is proved through first-principles calculations and spectral analysis. Notably, the CsEuBr3 NCs exhibit remarkable stability when exposed to high temperature, UV irradiation, and long-term sealed storage. The incorporation of CsEuBr3 NCs into polydimethylsiloxane (PDMS) serving as a converter is utilized for white light-emitting devices (WLEDs). WLEDs for backlight displays achieves a wide color gamut of 127.1% of the National Television System Committee standard (NTSC), 94.9% coverage of the ITU-R Recommendation BT.2020 (Rec.2020), and their half-lifetime is up to 1677 h, providing a promising pathway for highly efficient, environment-friendly and practical liquid crystal display backlights.
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Affiliation(s)
- Xu Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Bibo Lou
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Xu Chen
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Meng Wang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Huifang Jiang
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Shuailing Lin
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Zhuangzhuang Ma
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Mochen Jia
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yanbing Han
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yongtao Tian
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Di Wu
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, China
| | - Xinjian Li
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Chonggeng Ma
- School of Optoelectronic Engineering & CQUPT-BUL Innovation Institute, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Zhifeng Shi
- Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
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13
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Zhang ZH, Yan SS, Chen YL, Lian ZD, Fu A, Kong YC, Li L, Su SC, Ng KW, Wei ZP, Liu HC, Wang SP. Air-Stable Self-Driven UV Photodetectors on Controllable Lead-Free CsCu 2I 3 Microwire Arrays. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10398-10406. [PMID: 38380978 PMCID: PMC10910456 DOI: 10.1021/acsami.3c17881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024]
Abstract
The rapid evolution of the Internet of Things has engendered increased requirements for low-cost, self-powered UV photodetectors. Herein, high-performance self-driven UV photodetectors are fabricated by designing asymmetric metal-semiconductor-metal structures on the high-quality large-area CsCu2I3 microwire arrays. The asymmetrical depletion region doubles the photocurrent and response speed compared to the symmetric structure device, leading to a high responsivity of 233 mA/W to 355 nm radiation. Notably, at 0 V bias, the asymmetric device produces an open-circuit voltage of 356 mV and drives to a short-circuit current of 372 pA; meanwhile, the switch ratio (Iph/Idark) reaches up to 103, indicating its excellent potential for detecting weak light. Furthermore, the device maintains stable responses throughout 10000 UV-light switch cycles, with negligible degradation even after 90-day storage in air. Our work establishes that CsCu2I3 is a good candidate for self-powered UV detection and thoroughly demonstrates its potential as a passive device.
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Affiliation(s)
- Zhi-Hong Zhang
- State
Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Shan-Shan Yan
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Yu-Long Chen
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Zhen-Dong Lian
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Ai Fu
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - You-Chao Kong
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Lin Li
- Key
Laboratory for Photonic and Electronic Bandgap Materials, Ministry
of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China
| | - Shi-Chen Su
- School
of Semiconductor Science and Technology, South China Normal University, Foshan 528000, China
| | - Kar-Wei Ng
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Zhi-Peng Wei
- State
Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
| | - Hong-Chao Liu
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
| | - Shuang-Peng Wang
- Institute
of Applied Physics and Materials Engineering, University of Macau, Taipa, Macao SAR 999078, China
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14
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Gao Y, Xu Z, Ye L, Wang Y, Zhuang X. A zero-dimensional hybrid copper(I) bromide single crystal with highly efficient green emission. Phys Chem Chem Phys 2024; 26:2472-2477. [PMID: 38168950 DOI: 10.1039/d3cp05140d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Lead-free metal halides are considered as alternatives to lead-based perovskites due to their low toxicity, rich structural diversity, and high luminescence properties. We report millimeter-sized single crystals of a new zero-dimensional (0D) copper(I)-based hybrid material, (AEP)2Cu2Br6·2Br·2H2O (AEP = C6H18N33+), which exhibits bright broadband green photoluminescence (PL) at 510 nm with a Stokes shift of 220 nm and a PL lifetime of 121.1 μs. Density functional theory (DFT) calculations and experimental studies reveal that the green light can be attributed to self-trapping exciton (STE) emission. It is worth mentioning that this crystal has a high photoluminescence quantum yield (PLQY) of 90.5%, which is higher than most copper halides.
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Affiliation(s)
- Yingui Gao
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhihuang Xu
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
| | - Liwang Ye
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
| | - Yuanjie Wang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, China
| | - Xinxin Zhuang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
- University of Chinese Academy of Sciences, Beijing 100049, China
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15
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Kuruppu UM, Rahman MA, Gangishetty MK. Unraveling the Origin of an Unusual Shift in the Electroluminescence of 1D CsCu 2I 3 Light-Emitting Diodes. ACS NANO 2024; 18:1647-1657. [PMID: 38166382 DOI: 10.1021/acsnano.3c09824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Lead-free low-dimensional copper-based metal halides are promising luminescent materials for broadband LEDs owing to their broad self-trapped exciton (STE) emission. However, recently, in 1D CsCu2I3, a discrepancy between their electroluminescence (EL) and photoluminescence (PL) has been observed. As a result, the overall output color from LEDs is significantly different than the anticipated emission. To unveil the origin of this discrepancy, here, we provide comprehensive analyses and show that the shift in the EL is caused neither by any structural/optical interactions between CsCu2I3 and electron transport layers (ETL) nor by the degradation of 1D CsCu2I3. Instead, it depends on the carrier imbalance on CsCu2I3, mainly due to the difference in the electron mobility of the ETLs and the electron density on the CsCu2I3 layer. By varying the ETLs, different colored 1D CsCu2I3 LEDs with peaks at 556, 590, and 647 nm are fabricated, and a maximum luminance of over 2000 cd/m2 is achieved for a 556 nm LED. Further, by limiting the electron mobility and injection to 1D CsCu2I3 using an insulating LiF layer at the CsCu2I3/ETL interface, more red-shifted LEDs are achieved confirming the critical role of electron density on the EL characteristics of 1D CsCu2I3.
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Affiliation(s)
- Udara M Kuruppu
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Mohammad A Rahman
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
| | - Mahesh K Gangishetty
- Department of Chemistry, Mississippi State University, Mississippi State, Mississippi 39762, United States
- Department of Physics and Astronomy, Mississippi State University, Mississippi State, Mississippi 39762, United States
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16
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Ou K, Wang Y, Zhang W, Tang Y, Ni Y, Xia Y, Wang H. Highly Sensitive H 2S Gas Sensor Based on a Lead-Free CsCu 2I 3 Perovskite Film at Room Temperature. ACS OMEGA 2023; 8:48326-48335. [PMID: 38144075 PMCID: PMC10733916 DOI: 10.1021/acsomega.3c07694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/21/2023] [Accepted: 11/28/2023] [Indexed: 12/26/2023]
Abstract
Recently, there have been reports of lead halide perovskite-based sensors demonstrating their potential for gas sensing applications. However, the toxicity of lead and the instability of lead-based perovskites have limited their applications. This study addressed this issue by developing a H2S gas sensor based on a lead-free CsCu2I3 film prepared using a one-step CVD method. The sensor demonstrated excellent sensing properties, including a high response and selectivity toward H2S, even at low concentrations (0.2 ppm) at room temperature. Furthermore, a reasonable sensing mechanism was proposed. It is suggested that the sensing mechanism sheds light on the role of defects in perovskite materials, the impact of H2S as an electron donor, and the occurrence of reversible chemical reactions. These findings suggest that lead-free CsCu2I3 has great potential in the field of H2S gas sensing.
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Affiliation(s)
- Kai Ou
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yue Wang
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Wenting Zhang
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yongliang Tang
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yuxiang Ni
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yudong Xia
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Hongyan Wang
- School of Physical Science
and Technology, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
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17
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Jiang F, Wu Z, Lu M, Gao Y, Li X, Bai X, Ji Y, Zhang Y. Broadband Emission Origin in Metal Halide Perovskites: Are Self-Trapped Excitons or Ions? ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211088. [PMID: 36988940 DOI: 10.1002/adma.202211088] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 03/20/2023] [Indexed: 06/19/2023]
Abstract
It has always been a goal to realize high efficiency and broadband emission in single-component materials. The appearance of metal halide perovskites makes it possible. Their soft lattice characteristics and significant electron-phonon coupling synergistically generate self-trapped excitons (STEs), contributing to a broadband emission with a large Stokes shift. Meanwhile, their structural/compositional diversity provides suitable active sites and coordination environments for doping of ns2 ions, allowing 3 Pn ( n =0,1,2) →1 S0 transitions toward broadband emission. The ns2 ions emission is phenomenologically similar to that of STE emission, hindering in-depth understanding of their emission origin, and leading to failure to meet the design requirements for practical applications. In this scenario, herein, the fundamentals and development of such two emission mechanisms are summarized to establish a clear and comprehensive understanding of the broadband emission phenomenon, which may pave the way to an ideal customization of broadband-emission metal halide perovskites.
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Affiliation(s)
- Feng Jiang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
- College of Physics, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Zhennan Wu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Min Lu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Yanbo Gao
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Xin Li
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Xue Bai
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Yuan Ji
- College of Physics, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Yu Zhang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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18
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Qi JL, Wu J, Yan SF, Xu JJ, Liu W, Guo SP. Cluster-Centered Excited-State-Induced Bright Low-Energy Emissive Hybrid Copper Iodide Constructing Stable White LEDs. Inorg Chem 2023; 62:18825-18829. [PMID: 37934934 DOI: 10.1021/acs.inorgchem.3c03608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Herein, we successfully synthesized a stable copper iodide hybrid with a 0D structure, (C20H20P)2Cu2I4, in which [Cu2I4]2- dimers with a short Cu-Cu distance (2.64 Å) are isolated and surrounded by [C20H20P]+ organic cations. Bright broadband yellow emission (576 nm) featuring a wide excitation range from 240 to 450 nm was achieved, along with a large Stokes shift (211 nm), long-lived lifetime (1.99 μs), and zero self-absorption. The results combined with crystal structure, spectroscopy analysis, and theoretical studies reveal that a cluster-centered excited state is responsible for this yellow emission. Importantly, the structure of (C20H20P)2Cu2I4 remains unchanged even after soaking in water for 30 days or heating at 80 °C for 240 h due to the intermolecular interaction. Furthermore, a stable white LED showing a naturally correlated color temperature (CCT) of 6573 K and CIE color coordinate of (0.31, 0.37) was also demonstrated. This work demonstrates efficient light emitters based on lead-free and stable metal halides for lighting, providing an important reference for the development of stable, high-performance metal halide phosphors.
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Affiliation(s)
- Jing-Li Qi
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Jiajing Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Shu-Fang Yan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Jun-Jie Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Wenlong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
| | - Sheng-Ping Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, People's Republic of China
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19
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Ma Z, Ji X, Lin S, Chen X, Wu D, Li X, Zhang Y, Shan C, Shi Z, Fang X. Recent Advances and Opportunities of Eco-Friendly Ternary Copper Halides: A New Superstar in Optoelectronic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2300731. [PMID: 36854310 DOI: 10.1002/adma.202300731] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 02/19/2023] [Indexed: 06/18/2023]
Abstract
Recently, the newly-emerging lead-free metal-halide materials with less toxicity and superior optoelectronic properties have received wide attention as the safer and potentially more robust alternatives to lead-based perovskite counterparts. Among them, ternary copper halides (TCHs) have become a vital group due to their unique features, including abundant structural diversity, ease of synthesis, unprecedented optoelectronic properties, high abundance, and low cost. Although the recent efforts in this field have made certain progresses, some scientific and technological issues still remain unresolved. Herein, a comprehensive and up-to-date overview of recent progress on the fundamental characteristics of TCH materials and their versatile applications is presented, which contains topics such as: i) crystal and electronic structure features and synthesis strategies; ii) mechanisms of self-trapped excitons, luminescence regulation, and environmental stability; and iii) their burgeoning optoelectronic devices of phosphor-converted white light-emitting diodes (WLEDs), electroluminescent LEDs, anti-counterfeiting, X-ray scintillators, photodetectors, sensors, and memristors. Finally, the current challenges together with future perspectives on the development of TCH materials and applications are also critically described, which is considered to be critical for accelerating the commercialization of these rapidly evolving technologies.
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Affiliation(s)
- Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Xinzhen Ji
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Shuailing Lin
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, P. R. China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, P. R. China
| | - Xiaosheng Fang
- Department of Materials Science, Institute of Optoelectronics, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
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20
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Li G, Chen X, Wang M, Cheng S, Yang D, Wu D, Han Y, Jia M, Li X, Zhang Y, Shan C, Shi Z. Regulating Exciton De-Trapping of Te 4+ -Doped Zero-Dimensional Scandium-Halide Perovskite for Fluorescence Thermometry with Record High Time-Resolved Thermal Sensitivity. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305495. [PMID: 37603794 DOI: 10.1002/adma.202305495] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/15/2023] [Indexed: 08/23/2023]
Abstract
Fluorescence thermometry has been propelled to the forefront of scientific attention due to its high spatial resolution and remote non-invasive detection. However, recent generations of thermometers still suffer from limited thermal sensitivity (Sr ) below 10% change per Kelvin. Herein, this work presents an ideal temperature-responsive fluorescence material through Te4+ -doped 0D Cs2 ScCl5 ·H2 O, in which isolated polyhedrons endow highly localized electronic structures, and the strong electron-phonon coupling facilitates the formation of self-trapped excitons (STEs). With rising temperature, the dramatic asymmetric expansion of the soft lattice induces increased defects, strong exciton-phonon coupling, and low thermal activation energy, which evokes a rapid de-trapping process of STEs, enabling several orders of magnitude changes in the fluorescence lifetime over a narrow temperature range. After regulating the de-trapping process with different Te4+ doping, a record-high Sr (27.36% K-1 ) of fluorescence lifetime-based detection is achieved at 325 K. The robust stability against multiple heating/cooling cycles and long-term measurements enables a low temperature uncertainty of 0.067 K. Further, the developed thermometers are demonstrated for the remote local monitoring of operating temperature on internal electronic components. It is believed that this work constitutes a solid step towards building the next generation of ultrasensitive thermometers based on low-dimensional metal halides.
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Affiliation(s)
- Gaoqiang Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Meng Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Shanshan Cheng
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Dongwen Yang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yanbing Han
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
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21
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Han D, Wang J, Agosta L, Zang Z, Zhao B, Kong L, Lu H, Mosquera-Lois I, Carnevali V, Dong J, Zhou J, Ji H, Pfeifer L, Zakeeruddin SM, Yang Y, Wu B, Rothlisberger U, Yang X, Grätzel M, Wang N. Tautomeric mixture coordination enables efficient lead-free perovskite LEDs. Nature 2023; 622:493-498. [PMID: 37557914 DOI: 10.1038/s41586-023-06514-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 08/02/2023] [Indexed: 08/11/2023]
Abstract
Lead halide perovskite light-emitting diodes (PeLEDs) have demonstrated remarkable optoelectronic performance1-3. However, there are potential toxicity issues with lead4,5 and removing lead from the best-performing PeLEDs-without compromising their high external quantum efficiencies-remains a challenge. Here we report a tautomeric-mixture-coordination-induced electron localization strategy to stabilize the lead-free tin perovskite TEA2SnI4 (TEAI is 2-thiopheneethylammonium iodide) by incorporating cyanuric acid. We demonstrate that a crucial function of the coordination is to amplify the electronic effects, even for those Sn atoms that aren't strongly bonded with cyanuric acid owing to the formation of hydrogen-bonded tautomeric dimer and trimer superstructures on the perovskite surface. This electron localization weakens adverse effects from Anderson localization and improves ordering in the crystal structure of TEA2SnI4. These factors result in a two-orders-of-magnitude reduction in the non-radiative recombination capture coefficient and an approximately twofold enhancement in the exciton binding energy. Our lead-free PeLED has an external quantum efficiency of up to 20.29%, representing a performance comparable to that of state-of-the-art lead-containing PeLEDs6-12. We anticipate that these findings will provide insights into the stabilization of Sn(II) perovskites and further the development of lead-free perovskite applications.
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Affiliation(s)
- Dongyuan Han
- College of Physics, Jilin University, Changchun, China
| | - Jie Wang
- College of Physics, Jilin University, Changchun, China
| | - Lorenzo Agosta
- Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Ziang Zang
- College of Physics, Jilin University, Changchun, China
| | - Bin Zhao
- College of Physics, Jilin University, Changchun, China
| | - Lingmei Kong
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China
| | - Haizhou Lu
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
- Key Laboratory of MEMS of Ministry of Education, School of Integrated Circuits, Southeast University, Nanjing, China.
| | - Irea Mosquera-Lois
- Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Virginia Carnevali
- Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Jianchao Dong
- College of Physics, Jilin University, Changchun, China
| | - Jianheng Zhou
- College of Physics, Jilin University, Changchun, China
| | - Huiyu Ji
- College of Physics, Jilin University, Changchun, China
| | - Lukas Pfeifer
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Shaik M Zakeeruddin
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Yingguo Yang
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
- School of Microelectronics, Fudan University, Shanghai, China
| | - Bo Wu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology and Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, China
| | - Ursula Rothlisberger
- Laboratory of Computational Chemistry and Biochemistry, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China.
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland.
| | - Ning Wang
- College of Physics, Jilin University, Changchun, China.
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22
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Kim DY, Jung JG, Lee YJ, Park MH. Lead-Free Halide Perovskite Nanocrystals for Light-Emitting Diodes. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6317. [PMID: 37763594 PMCID: PMC10532894 DOI: 10.3390/ma16186317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/11/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023]
Abstract
Lead-based halide perovskite nanocrystals (PeNCs) have demonstrated remarkable potential for use in light-emitting diodes (LEDs). This is because of their high photoluminescence quantum yield, defect tolerance, tunable emission wavelength, color purity, and high device efficiency. However, the environmental toxicity of Pb has impeded their commercial viability owing to the restriction of hazardous substances directive. Therefore, Pb-free PeNCs have emerged as a promising solution for the development of eco-friendly LEDs. This review article presents a detailed analysis of the various compositions of Pb-free PeNCs, including tin-, bismuth-, antimony-, and copper-based perovskites and double perovskites, focusing on their stability, optoelectronic properties, and device performance in LEDs. Furthermore, we address the challenges encountered in using Pb-free PeNC-LEDs and discuss the prospects and potential of these Pb-free PeNCs as sustainable alternatives to lead-based PeLEDs. In this review, we aim to shed light on the current state of Pb-free PeNC LEDs and highlight their significance in driving the development of eco-friendly LED technologies.
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Affiliation(s)
- Do-Young Kim
- Department of Materials Science and Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea; (D.-Y.K.); (J.-G.J.); (Y.-J.L.)
- Department of Green Chemistry and Materials Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
| | - Jae-Geun Jung
- Department of Materials Science and Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea; (D.-Y.K.); (J.-G.J.); (Y.-J.L.)
- Department of Green Chemistry and Materials Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
| | - Ye-Ji Lee
- Department of Materials Science and Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea; (D.-Y.K.); (J.-G.J.); (Y.-J.L.)
| | - Min-Ho Park
- Department of Materials Science and Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea; (D.-Y.K.); (J.-G.J.); (Y.-J.L.)
- Department of Green Chemistry and Materials Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
- Integrative Institute of Basic Science, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea
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23
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Zhao N, Yan J, Zhuo C, Yuan L, Chen Y, Nan Y, Zhou M, Yang X, Qian D, Wang N, Wang J. Enhanced Charge Balance for Efficient Electroluminescence from Cesium Copper Halides. J Phys Chem Lett 2023:6867-6871. [PMID: 37490522 DOI: 10.1021/acs.jpclett.3c01821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Cesium copper halides have the advantages of high photoluminescence quantum efficiency and good stability, making them attractive for replacing toxic lead halides in the field of perovskite light-emitting diodes (LEDs). However, due to their shallow conduction band and the lack of electron transport layers compatible with it, it remains a great challenge to achieve charge balance in LED devices. This drawback manifests as the accumulation of holes at the interface between the emitting layer and electron transport layer, resulting in nonradiative recombination. Here, we demonstrate an effective approach to address this issue by suppressing hole injection, which is realized through modification of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) layer with polyethylenimine. This leads to cesium-copper-halide LEDs with a high external quantum efficiency of 5.6%, representing an advance in device architecture for efficient electroluminescence from cesium copper halides.
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Affiliation(s)
- Nian Zhao
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Jing Yan
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Chunxue Zhuo
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Lingzhi Yuan
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yu Chen
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Yang Nan
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Mingmin Zhou
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Xiao Yang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Dongmin Qian
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Nana Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Jianpu Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), & School of Flexible Electronics (Future Technologies), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
- Changzhou University, 21 Middle Gehu Road, Changzhou 213164, China
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24
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Hossain MK, Bhattarai S, Arnab AA, Mohammed MKA, Pandey R, Ali MH, Rahman MF, Islam MR, Samajdar DP, Madan J, Bencherif H, Dwivedi DK, Amami M. Harnessing the potential of CsPbBr 3-based perovskite solar cells using efficient charge transport materials and global optimization. RSC Adv 2023; 13:21044-21062. [PMID: 37448634 PMCID: PMC10336477 DOI: 10.1039/d3ra02485g] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
Perovskite solar cells (PSCs) have become a possible alternative to traditional photovoltaic devices for their high performance, low cost, and ease of fabrication. Here in this study, the SCAPS-1D simulator numerically simulates and optimizes CsPbBr3-based PSCs under the optimum illumination situation. We explore the impact of different back metal contacts (BMCs), including Cu, Ag, Fe, C, Au, W, Pt, Se, Ni, and Pd combined with the TiO2 electron transport layer (ETL) and CFTS hole transport layer (HTL), on the performance of the devices. After optimization, the ITO/TiO2/CsPbBr3/CFTS/Ni structure showed a maximum power conversion efficiency (PCE or η) of 13.86%, with Ni as a more cost-effective alternative to Au. After the optimization of the BMC the rest of the investigation is conducted both with and without HTL mode. We investigate the impact of changing the thickness and the comparison with acceptor and defect densities (with and without HTL) of the CsPbBr3 perovskite absorber layer on the PSC performance. Finally, we optimized the thickness, charge carrier densities, and defect densities of the absorber, ETL, and HTL, along with the interfacial defect densities at HTL/absorber and absorber/ETL interfaces to improve the PCE of the device; and the effect of variation of these parameters is also investigated both with and without HTL connected. The final optimized configuration achieved a VOC of 0.87 V, JSC of 27.57 mA cm-2, FF of 85.93%, and PCE of 20.73%. To further investigate the performance of the optimized device, we explore the impact of the temperature, shunt resistance, series resistance, capacitance, generation rate, recombination rate, Mott-Schottky, JV, and QE features of both with and without HTL connected. The optimized device offers the best thermal stability at a temperature of 300 K. Our study highlights the potential of CsPbBr3-based PSCs and provides valuable insights for their optimization and future development.
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Affiliation(s)
- M Khalid Hossain
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission Dhaka 1349 Bangladesh
| | - Sagar Bhattarai
- Department of Physics, Arunachal University of Studies Namsai 792103 Arunachal Pradesh India
| | - A A Arnab
- Department of Electrical & Electronic Engineering, Ahsanullah University of Science and Technology Dhaka 1208 Bangladesh
| | | | - Rahul Pandey
- VLSI Centre of Excellence, Chitkara University Institute of Engineering and Technology, Chitkara University Punjab 140401 India
| | - Md Hasan Ali
- Advanced Energy Materials and Solar Cell Research Laboratory, Department of Electrical and Electronic Engineering, Begum Rokeya University Rangpur 5400 Bangladesh
| | - Md Ferdous Rahman
- Advanced Energy Materials and Solar Cell Research Laboratory, Department of Electrical and Electronic Engineering, Begum Rokeya University Rangpur 5400 Bangladesh
| | - Md Rasidul Islam
- Department of Electrical and Electronic Engineering, Bangamata Sheikh Fojilatunnesa Mujib Science & Technology University Jamalpur 2012 Bangladesh
| | - D P Samajdar
- Department of ECE, Indian Institute of Information Technology, Design & Manufacturing Madhya Pradesh 482005 India
| | - Jaya Madan
- VLSI Centre of Excellence, Chitkara University Institute of Engineering and Technology, Chitkara University Punjab 140401 India
| | - H Bencherif
- LEREESI, Higher National School of Renewable Energies, Environment and Sustainable Development Batna 05078 Algeria
| | - D K Dwivedi
- Department of Physics and Material Science, Madan Mohan Malaviya University of Technology Gorakhpur-273010 U.P. India
| | - Mongi Amami
- Department of Chemistry, College of Sciences, King Khalid University P.O. Box 9004 Abha Saudi Arabia
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25
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Banerjee D, Popy DA, Leininger BC, Creason TD, Mapara VN, Furis M, Borunda MF, Saparov B. Zero-Dimensional Broadband Yellow Light Emitter (TMS) 3Cu 2I 5 for Latent Fingerprint Detection and Solid-State Lighting. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 37307198 DOI: 10.1021/acsami.3c04077] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report a new hybrid organic-inorganic Cu(I) halide, (TMS)3Cu2I5 (TMS = trimethylsulfonium), which demonstrates high efficiency and stable yellow light emission with a photoluminescence quantum yield (PLQY) over 25%. The zero-dimensional crystal structure of the compound is comprised of isolated face-sharing photoactive [Cu2I5]3- tetrahedral dimers surrounded by TMS+ cations. This promotes strong quantum confinement and electron-phonon coupling, leading to a highly efficient emission from self-trapped excitons. The hybrid structure ensures prolonged stability and nonblue emission compared to unstable blue emission from all-inorganic copper(I) halides. Substitution of Cu with Ag leads to (TMS)AgI2, which has a one-dimensional chain structure made of edge-sharing tetrahedra, with weak light emission properties. Improved stability and highly efficient yellow emission of (TMS)3Cu2I5 make it a candidate for practical applications. This has been demonstrated through utilization of (TMS)3Cu2I5 in white light-emitting diode with a high Color Rendering Index value of 82 and its use as a new luminescent agent for visualization of in-depth latent fingerprint features. This work illuminates a new direction in designing multifunctional nontoxic hybrid metal halides.
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Affiliation(s)
- Dhritiman Banerjee
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Dilruba A Popy
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Brian C Leininger
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Tielyr D Creason
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Varun Nitin Mapara
- Center for Quantum Research and Technology (CQRT)/Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, Oklahoma 73019, United States
| | - Madalina Furis
- Center for Quantum Research and Technology (CQRT)/Physics and Astronomy, University of Oklahoma, 440 W. Brooks St., Norman, Oklahoma 73019, United States
| | - Mario F Borunda
- Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Bayram Saparov
- Department of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
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26
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Liu Z, Sun Y, Cai T, Yang H, Zhao J, Yin T, Hao C, Chen M, Shi W, Li X, Guan L, Li X, Wang X, Tang A, Chen O. Two-Dimensional Cs 2 AgIn x Bi 1- x Cl 6 Alloyed Double Perovskite Nanoplatelets for Solution-Processed Light-Emitting Diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211235. [PMID: 36906925 DOI: 10.1002/adma.202211235] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/21/2023] [Indexed: 05/12/2023]
Abstract
Lead-free double perovskites have emerged as a promising class of materials with potential to be integrated into a wide range of optical and optoelectronic applications. Herein, the first synthesis of 2D Cs2 AgInx Bi1- x Cl6 (0 ≤ x ≤ 1) alloyed double perovskite nanoplatelets (NPLs) with well controlled morphology and composition is demonstrated. The obtained NPLs show unique optical properties with the highest photoluminescence quantum yield of 40.1%. Both temperature dependent spectroscopic studies and density functional theory calculation results reveal that the morphological dimension reduction and In-Bi alloying effect together boost the radiative pathway of the self-trapped excitons of the alloyed double perovskite NPLs. Moreover, the NPLs exhibit good stability under ambient conditions and against polar solvents, which is ideal for all solution-processing of the materials in low-cost device manufacturing. The first solution-processed light-emitting diodes is demonstrated using the Cs2 AgIn0.9 Bi0.1 Cl6 alloyed double perovskite NPLs as the sole emitting component, showing luminance maximum of 58 cd m-2 and peak current efficiency of 0.013 cd A-1 . This study sheds light on morphological control and composition-property relationships of double perovskite nanocrystals, paving the way toward ultimate utilizations of lead-free perovskite materials in diverse sets of real-life applications.
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Affiliation(s)
- Zhenyang Liu
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Yingying Sun
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Tong Cai
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - Hanjun Yang
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
| | - JinXing Zhao
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing JiaoTong University, Beijing, 100044, China
| | - Tao Yin
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Chaoqi Hao
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Mingjun Chen
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Wenwu Shi
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
- Institute of Information Technology, Shenzhen Institute of Information Technology, Shenzhen, 518172, China
| | - Xiaoxiao Li
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Li Guan
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Xu Li
- Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Xinzhong Wang
- Institute of Information Technology, Shenzhen Institute of Information Technology, Shenzhen, 518172, China
| | - Aiwei Tang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing JiaoTong University, Beijing, 100044, China
| | - Ou Chen
- Department of Chemistry, Brown University, Providence, RI, 02912, USA
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27
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Branzi L, Kavanagh A, Back M, Speghini A, Gun'ko YK, Benedetti A. Chirality in luminescent Cs 3Cu 2Br 5 microcrystals produced via ligand-assisted reprecipitation. Chem Commun (Camb) 2023; 59:6024-6027. [PMID: 37186125 DOI: 10.1039/d3cc00719g] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Herein we report new chiral luminescent Cs3Cu2Br5 needle-like microcrystals and the analysis of their optical properties and the effect of the ligand structure on the transfer of chirality.
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Affiliation(s)
- Lorenzo Branzi
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155 Venezia Mestre, Venezia, VE, Italy
- School of Chemistry, CDT ACM, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
| | - Aoife Kavanagh
- School of Chemistry, CDT ACM, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
| | - Michele Back
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155 Venezia Mestre, Venezia, VE, Italy
| | - Adolfo Speghini
- Nanomaterials Research Group, Department of Biotechnology and INSTM, RU of Verona, University of Verona, Strada le Grazie 15, Verona, Italy
| | - Yurii K Gun'ko
- School of Chemistry, CDT ACM, CRANN and AMBER Research Centres, Trinity College Dublin, College Green, Dublin 2, Ireland.
| | - Alvise Benedetti
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Via Torino 155 Venezia Mestre, Venezia, VE, Italy
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28
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Zhou X, Chang Q, Xiang G, Jiang S, Li L, Tang X, Ling F, Wang Y, Li J, Wang Z, Zhang X. A and B sites dual substitution by Na + and Cu 2+ co-doping in CsPbBr 3 quantum dots to achieve bright and stable blue light emitting diodes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 300:122773. [PMID: 37244025 DOI: 10.1016/j.saa.2023.122773] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 04/06/2023] [Accepted: 04/21/2023] [Indexed: 05/29/2023]
Abstract
Light-emitting perovskite quantum dots (PeQDs) are extensively investigated owing to their evident merits. However, it is still a challenge to adjust their intrinsic emissions and enhance their thermal stability to achieve full-color highly emissive QD-based light-emitting diodes (QLEDs), especially blue QLEDs. Herein, we demonstrate an effective strategy to fundamentally stabilize the crystal structure of CsPbBr3 QDs by codoping Na+ and Cu2+ ions, which are designed to substitute Cs+ (A sites) and Pb2+ (B sites), respectively. It is found out that the codoping metal ions have significantly improved the thermal stability and the optical properties of the QDs. 40% of the emission intensity can be remained after 8 thermal cycles (20-120 °C) for CsPbBr3: Na+/Cu2+ QDs, whilst less than 10% is maintained for undoped CsPbBr3 QDs. Accordingly, stable blue QLEDs are packed by CsPbBr3: Na+/Cu2+ QDs. Strong electroluminescence with the maximum luminance of 7161 cd m-2 and low turn-on voltage of 2.4 V are realized. The CIE coordinates are tuned from green (0.10, 0.74) to blue (0.17, 0.25) via Na+ and Cu2+ codoping. The maximum external quantum efficiency (EQEmax) is obtained as 4.52% for PeLEDs based on codoped QDs. The proposed metal ions A and B sites dual substitution strategy guarantees PeQDs as an extremely promising prospect in potential applications as high-resolution displays and high-quality lightings.
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Affiliation(s)
- Xianju Zhou
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China.
| | - Qianyang Chang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Guotao Xiang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Sha Jiang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Li Li
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Xiao Tang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Faling Ling
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Yongjie Wang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Jingfang Li
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China
| | - Zhen Wang
- School of Science, Chongqing University of Posts and Telecommunications, Chongqing 400065, PR China.
| | - Xuecong Zhang
- Jiangsu AMICC Optoelectronics Technology Co., Ltd., Changzhou 213164, PR China.
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29
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Zhang G, Xing S, Cao X, Zhao B, Di D. Stabilizing FASnI 3-based perovskite light-emitting diodes with crystallization control. NANOSCALE 2023; 15:6954-6959. [PMID: 36988969 DOI: 10.1039/d3nr00177f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
The toxicity of lead presents a critical challenge for the application of perovskite optoelectronics. Lead-free perovskite solar cells were achieved with formamidinium tin iodide (FASnI3) perovskites, exhibiting decent power-conversion efficiencies (PCEs) of up to 14%, with >98% of the initial PCE retained after 3000 h of storage. However, when employed in light-emitting applications, FASnI3-based perovskite LEDs (PeLEDs) show limited stability, with T50 lifetimes of up to 0.25 h at 10 mA cm-2. Here, we improve the stability of FASnI3-based PeLEDs through the inclusion of a two-dimensional precursor phenethylamine iodide (PEAI), allowing controlled crystallization of the mixed-dimensional perovskite emitters. The density of defects is found to be reduced, accompanied by the suppression of oxidation from Sn2+ to Sn4+. Using an optimized perovskite composition, we achieve an EQE of 1.5% (a ∼10-fold improvement over the control devices), a maximum radiance of 145 W sr-1 m-2, and a record-long T50 lifetime of 10.3 h at 100 mA cm-2 for FASnI3-based PeLEDs. Our results illuminate an alternative path toward lead-free PeLED applications.
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Affiliation(s)
- Guoling Zhang
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering; International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, China.
| | - Shiyu Xing
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering; International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, China.
| | - Xuhui Cao
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering; International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, China.
| | - Baodan Zhao
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering; International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, China.
| | - Dawei Di
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering; International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, 310027, China.
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30
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Jang C, Kim K, Nho HW, Lee SM, Mubarok H, Han JH, Kim H, Lee D, Jang Y, Lee MH, Kwon OH, Kwak SK, Im WB, Song MH, Park J. Synthesis of Thermally Stable and Highly Luminescent Cs 5 Cu 3 Cl 6 I 2 Nanocrystals with Nonlinear Optical Response. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206668. [PMID: 36703517 DOI: 10.1002/smll.202206668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 12/19/2022] [Indexed: 06/18/2023]
Abstract
Low-dimensional Cu(I)-based metal halide materials are gaining attention due to their low toxicity, high stability and unique luminescence mechanism, which is mediated by self-trapped excitons (STEs). Among them, Cs5 Cu3 Cl6 I2 , which emits blue light, is a promising candidate for applications as a next-generation blue-emitting material. In this article, an optimized colloidal process to synthesize uniform Cs5 Cu3 Cl6 I2 nanocrystals (NCs) with a superior quantum yield (QY) is proposed. In addition, precise control of the synthesis parameters, enabling anisotropic growth and emission wavelength shifting is demonstrated. The synthesized Cs5 Cu3 Cl6 I2 NCs have an excellent photoluminescence (PL) retention rate, even at high temperature, and exhibit high stability over multiple heating-cooling cycles under ambient conditions. Moreover, under 850-nm femtosecond laser irradiation, the NCs exhibit three-photon absorption (3PA)-induced PL, highlighting the possibility of utilizing their nonlinear optical properties. Such thermally stable and highly luminescent Cs5 Cu3 Cl6 I2 NCs with nonlinear optical properties overcome the limitations of conventional blue-emitting nanomaterials. These findings provide insights into the mechanism of the colloidal synthesis of Cs5 Cu3 Cl6 I2 NCs and a foundation for further research.
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Affiliation(s)
- Changhee Jang
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Kangyong Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hak-Won Nho
- Department of Chemistry, College of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Seung Min Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Hanif Mubarok
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Joo Hyeong Han
- Division of Materials Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Hyeonjung Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Dongryeol Lee
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Yangpil Jang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry, University of Ulsan, Ulsan, 44610, Republic of Korea
| | - Oh-Hoon Kwon
- Department of Chemistry, College of Natural Sciences, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Sang Kyu Kwak
- Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Won Bin Im
- Division of Materials Science and Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Myoung Hoon Song
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jongnam Park
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
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31
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Lu Q, Zhang Y, Yang G, Xiong M, Wu W, Xu Z, Lu H, Liang Y, He Z, Yu Y, Mo X, Han X, Pan C. Large-Scale, Uniform-Patterned CsCu 2 I 3 Films for Flexible Solar-Blind Photodetectors Array with Ultraweak Light Sensing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300364. [PMID: 36987976 DOI: 10.1002/smll.202300364] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/27/2023] [Indexed: 06/19/2023]
Abstract
Cesium copper halide perovskite is one of the promising materials for solar-blind light detection. However, most of the cesium copper halide perovskite-based photodetectors (PDs) are focused on ultraviolet A detection and realized on the rigid substrate in the single device configuration. Here, a flexible solar-blind PDs array (10 × 10 pixels) based on the CsCu2 I3 film patterns for ultraweak light sensing and light distribution imaging is reported. Large-scale CsCu2 I3 film arrays are synthesized with various shapes and uniform dimensions through a simple vacuum-heating-assisted solution method. Benefiting from excellent air stability and superior resistance to the photodegrading of the CsCu2 I3 film, the array device exhibits long-term stable photoswitching behavior for 8 h and ultralow light detection capability to resolve the light intensity of 6.1 nW cm-2 with a high responsivity of 62 A W-1 , and the array device can acquire clear images of "G", "X", and "U" showing the input light distribution. Moreover, the flame detection and warning system based on a curved solar-blind PDs array is demonstrated, which can be used for multi-flame monitoring and locating. These results can encourage potential applications of the CsCu2 I3 film-based PDs array in the field of optical communication and environment monitoring.
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Affiliation(s)
- Qiuchun Lu
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Yufei Zhang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Guanlin Yang
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, P. R. China
| | - Meiling Xiong
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
| | - Wenqiang Wu
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Zhangsheng Xu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Lu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yegang Liang
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Zeping He
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yang Yu
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Xiaoming Mo
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
| | - Xun Han
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, School of Micro-Nano Electronics, Zhejiang University, Hangzhou, 311200, P. R. China
| | - Caofeng Pan
- Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning, 530004, P. R. China
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
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32
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Han S, Quan J, Wang D, Li H, Liu X, Xu J, Zhang Y, Li Z, Wu L, Fang X. Anisotropic Growth of Centimeter-Size CsCu 2 I 3 Single Crystals with Ultra-Low Trap Density for Aspect-Ratio-Dependent Photodetectors. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2206417. [PMID: 36599662 PMCID: PMC9982547 DOI: 10.1002/advs.202206417] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Indexed: 06/17/2023]
Abstract
Low-dimensional ternary copper iodide metal halide with strong quantum confinement effects has made great progress in optoelectronic fields. However, efficient regulation of anisotropic growth of metal halides single crystal still remains a great challenge. Herein, 2 cm size CsCu2 I3 single crystals with tunable aspect ratio and the trap states (ntrap ) as low as 5.38 × 109 cm-3 are fabricated by optimized anti-solvent vapor-assisted method, in which the growth cycle is shortened by half. Evidenced by real-time observation and the LaMer growth model, the rapid and anisotropic growth mechanism is ascribed to preferential 1D growth, promoted by high concentration and fast vapor rate. Furthermore, the aspect-ratio-dependent optoelectronic performance is observed, the on-off ratio for 2 cm CsCu2 I3 single crystal are enhanced 350 times compared with those of short and thick single crystal, which shows ultrahigh on-off ratio of 1570, D* of 1.34 × 1012 Jones, Rλ of 276.94 mA W-1 , t rise /t decay of 0.37 and 1.08 ms, and EQE of 95.53%, which are clearly at very high level among lead-free perovskite-based photodetectors. This study not only provides a new strategy for overcoming anisotropic growth limitations of low-dimensional metal halides, but also paves a way for high-performance optoelectronic applications.
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Affiliation(s)
- Sancan Han
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Jiale Quan
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Ding Wang
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Huijun Li
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Xinya Liu
- Department of Materials ScienceInstitute of OptoelectronicsState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200438P. R. China
| | - Jingcheng Xu
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Yixin Zhang
- School of Materials Science and EngineeringUniversity of Shanghai for Science and TechnologyShanghai200093P. R. China
| | - Ziqing Li
- Department of Materials ScienceInstitute of OptoelectronicsState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200438P. R. China
| | - Limin Wu
- Department of Materials ScienceInstitute of OptoelectronicsState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200438P. R. China
- College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021P. R. China
| | - Xiaosheng Fang
- Department of Materials ScienceInstitute of OptoelectronicsState Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai200438P. R. China
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33
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Yao L, Meng H, Liu M. Citric acid tuned negative thermal quenching of all inorganic copper-based perovskites. RSC Adv 2023; 13:5428-5436. [PMID: 36793305 PMCID: PMC9923819 DOI: 10.1039/d3ra00279a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 02/01/2023] [Indexed: 02/15/2023] Open
Abstract
Copper-based perovskites, with lower electronic dimensions and high photoluminescence quantum yields (PLQY), which are non-toxic and thermally stable, have been reported since 2019 and have immediately attracted great attention. So far, only a few studies have researched the temperature-dependent photoluminescence properties, posing a challenge in ensuring the stability of the material. In this paper, the temperature-dependent photoluminescence properties have been investigated in detail, and a negative thermal quenching of all-inorganic CsCu2I3 perovskites has been studied. Moreover, the negative thermal quenching property can be tuned with the assistance of citric acid, which has not been reported before. The Huang-Rhys factors are calculated to be 46.32/38.31, which is higher than for many semiconductors and perovskites.
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Affiliation(s)
- Lu Yao
- School of Advanced Materials, Peking University Shen Zhen Graduate School 2199 Lishui Road Shenzhen 518055 P. R. China
| | - Hong Meng
- School of Advanced Materials, Peking University Shen Zhen Graduate School 2199 Lishui Road Shenzhen 518055 P. R. China
| | - Ming Liu
- School of Advanced Materials, Peking University Shen Zhen Graduate School 2199 Lishui Road Shenzhen 518055 P. R. China
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34
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Zhang J, Zhang T, Ma Z, Yuan F, Zhou X, Wang H, Liu Z, Qing J, Chen H, Li X, Su S, Xie J, Shi Z, Hou L, Shan C. A Multifunctional "Halide-Equivalent" Anion Enabling Efficient CsPb(Br/I) 3 Nanocrystals Pure-Red Light-Emitting Diodes with External Quantum Efficiency Exceeding 23. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209002. [PMID: 36493461 DOI: 10.1002/adma.202209002] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Pure-red perovskite LEDs (PeLEDs) based on CsPb(Br/I)3 nanocrystals (NCs) usually suffer from a compromise in emission efficiency and spectral stability on account of the surface halide vacancies-induced nonradiative recombination loss, halide phase segregation, and self-doping effect. Herein, a "halide-equivalent" anion of benzenesulfonate (BS- ) is introduced into CsPb(Br/I)3 NCs as multifunctional additive to simultaneously address the above challenging issues. Joint experiment-theory characterizations reveal that the BS- can not only passivate the uncoordinated Pb2+ -related defects at the surface of NCs, but also increase the formation energy of halide vacancies. Moreover, because of the strong electron-withdrawing property of sulfonate group, electrons are expected to transfer from the CsPb(Br/I)3 NC to BS- for reducing the self-doping effect and altering the n-type behavior of CsPb(Br/I)3 NCs to near ambipolarity. Eventually, synergistic boost in device performance is achieved for pure-red PeLEDs with CIE coordinates of (0.70, 0.30) and a champion external quantum efficiency of 23.5%, which is one of the best value among the ever-reported red PeLEDs approaching to the Rec. 2020 red primary color. Moreover, the BS- -modified PeLED exhibits negligible wavelength shift under different operating voltages. This strategy paves an efficient way for improving the efficiency and stability of pure-red PeLEDs.
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Affiliation(s)
- Jibin Zhang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Tiankai Zhang
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, SE-58183, Sweden
| | - Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Fanglong Yuan
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, SE-58183, Sweden
- Key Laboratory of Theoretical & Computational Photochemistry of Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Xin Zhou
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Heyong Wang
- Department of Physics, Chemistry, and Biology (IFM), Linköping University, Linköping, SE-58183, Sweden
- Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Milan, 20133, Italy
| | - Zhe Liu
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Jian Qing
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Hongting Chen
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Shijian Su
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Jianing Xie
- Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of Physics and Optoelectronic Engineering, Foshan University, Foshan, 528225, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Lintao Hou
- Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Siyuan laboratory, Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, P. R. China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
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35
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Xue SH, Yao JY, Xu LJ, Chen ZN. Advances in electrically driven light-emitting diodes based on lead-free metal halides. Chem Commun (Camb) 2023; 59:1116-1124. [PMID: 36629875 DOI: 10.1039/d2cc06680g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The emerging lead halide perovskites show great potential for their use as emitters in electrically driven light-emitting diodes (LEDs) with external quantum efficiency (EQE) over 25%. While the toxicity of lead and inferior device stability are the main obstacles for their commercialization, replacing Pb2+ with low- or non-toxic metal ions to form low- or zero-dimensional structures provides an alternative approach to effectively tackle these issues. Recently, luminescent lead-free metal halides have been increasingly developed toward eco-friendly and highly efficient electroluminescence. In this feature article, we give a brief overview of recent advances in luminescent lead-free metal halides and their applications in electrically driven LEDs. The challenges and prospects in this field are outlined at the end.
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Affiliation(s)
- Shu-Hua Xue
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. .,College of Chemistry and Material Science, Fujian Normal University, Fuzhou 350007, China
| | - Jia-Yu Yao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China.
| | - Liang-Jin Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. .,College of Chemistry and Material Science, Fujian Normal University, Fuzhou 350007, China.,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China.,University of Chinese Academy of Sciences, Beijing 100039, China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. .,College of Chemistry and Material Science, Fujian Normal University, Fuzhou 350007, China.,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China.,University of Chinese Academy of Sciences, Beijing 100039, China
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An HX, Qiao BS, Zhang ZH, Lian ZD, Wei Z, Li XS, Zeng QG, Wang B, Ng KW, Wang SP. Ultraviolet photodetector based on RbCu 2I 3microwire. NANOTECHNOLOGY 2023; 34:145402. [PMID: 36621847 DOI: 10.1088/1361-6528/acb0d4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
Copper-based halide perovskites have shown great potential in lighting and photodetection due to their excellent photoelectric properties, good stability and lead-free nature. However, as an important piece of copper-based perovskites, the synthesis and application of RbCu2I3have never been reported. Here, we demonstrate the synthesis of high-quality RbCu2I3microwires (MWs) by a fast-cooling hot saturated solution method. The prepared MWs exhibit an orthorhombic structure with a smooth surface. Optical measurements show the RbCu2I3MWs have a sharp ultraviolet absorption edge with 3.63 eV optical band gap and ultra-large stokes shift (300 nm) in photoluminescence. The subsequent photodetector based on a single RbCu2I3MW shows excellent ultraviolet detection performance. Under the 340 nm illumination, the device shows a specific detectivity of 5.0 × 109Jones and a responsivity of 380 mA·W-1. The synthesis method and physical properties of RbCu2I3could be a guide to the future optoelectronic application of the new material.
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Affiliation(s)
- Hong-Xiang An
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
| | - Bao-Shi Qiao
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
| | - Zhi-Hong Zhang
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
- State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, Jilin 130022, People's Republic of China
| | - Zhen-Dong Lian
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
| | - Zhipeng Wei
- State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, Jilin 130022, People's Republic of China
| | - Xiao-Shuang Li
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Qing-Guang Zeng
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Bo Wang
- School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong 529020, People's Republic of China
| | - Kar Wei Ng
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
| | - Shuang-Peng Wang
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao, Macao SAR 999078, People's Republic of China
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Das A, Pal K, Acharyya P, Das S, Maji K, Biswas K. Strong Antibonding I (p)-Cu (d) States Lead to Intrinsically Low Thermal Conductivity in CuBiI 4. J Am Chem Soc 2023; 145:1349-1358. [PMID: 36595558 DOI: 10.1021/jacs.2c11908] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Chemical bonding present in crystalline solids has a significant impact on how heat moves through a lattice, and with the right chemical tuning, one can achieve extremely low thermal conductivity. The desire for intrinsically low lattice thermal conductivity (κlat) has gained widespread attention in thermoelectrics, in refractories, and nowadays in photovoltaics and optoelectronics. Here we have synthesized a high-quality crystalline ingot of cubic metal halide CuBiI4 and explored its chemical bonding and thermal transport properties. It exhibits an intrinsically ultralow κlat of ∼0.34-0.28 W m-1 K-1 in the temperature range 4-423 K with an Umklapp crystalline peak of 1.82 W m-1 K-1 at 20 K, which is surprisingly lower than other copper-based halide or chalcogenide materials. The crystal orbital Hamilton population analysis shows that antibonding states generated just below the Fermi level (Ef), which arise from robust copper 3d and iodine 5p interactions, cause copper-iodide bond weakening, which leads to reduction of the elastic moduli and softens the lattice, finally to produce extremely low κlat in CuBiI4. The chemical bonding hierarchy with mixed covalent and ionic interactions present in the complex crystal structure generates significant lattice anharmonicity and a low participation ratio in low-lying optical phonon modes originating mostly from localized copper-iodide bond vibrations. We have obtained experimental evidence of these low-lying modes by low-temperature specific heat capacity measurement as well as Raman spectroscopy. The presence of strong p-d antibonding interactions between copper and iodine leads to anharmonic soft crystal lattice which gives rise to low-energy localized optical phonon bands, suppressing the heat-carrying acoustic phonons to steer intrinsically ultralow κlat in CuBiI4.
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Affiliation(s)
- Anustoop Das
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore560064, India
| | - Koushik Pal
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois60208, United States
| | - Paribesh Acharyya
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore560064, India
| | - Subarna Das
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore560064, India
| | - Krishnendu Maji
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore560064, India
| | - Kanishka Biswas
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore560064, India
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Hossain MK, Arnab AA, Das RC, Hossain KM, Rubel MHK, Rahman MF, Bencherif H, Emetere ME, Mohammed MKA, Pandey R. Combined DFT, SCAPS-1D, and wxAMPS frameworks for design optimization of efficient Cs 2BiAgI 6-based perovskite solar cells with different charge transport layers. RSC Adv 2022; 12:34850-34873. [PMID: 36540224 PMCID: PMC9727753 DOI: 10.1039/d2ra06734j] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 11/28/2022] [Indexed: 08/08/2023] Open
Abstract
In this study, combined DFT, SCAPS-1D, and wxAMPS frameworks are used to investigate the optimized designs of Cs2BiAgI6 double perovskite-based solar cells. First-principles calculations are employed to investigate the structural stability, optical responses, and electronic contribution of the constituent elements in Cs2BiAgI6 absorber material, where SCAPS-1D and wxAMPS simulators are used to scrutinize different configurations of Cs2BiAgI6 solar cells. Here, PCBM, ZnO, TiO2, C60, IGZO, SnO2, WS2, and CeO2 are used as ETL, and Cu2O, CuSCN, CuSbS2, NiO, P3HT, PEDOT:PSS, spiro-MeOTAD, CuI, CuO, V2O5, CBTS, CFTS are used as HTL, and Au is used as a back contact. About ninety-six combinations of Cs2BiAgI6-based solar cell structures are investigated, in which eight sets of solar cell structures are identified as the most efficient structures. Besides, holistic investigation on the effect of different factors such as the thickness of different layers, series and shunt resistances, temperature, capacitance, Mott-Schottky and generation-recombination rates, and J-V (current-voltage density) and QE (quantum efficiency) characteristics is performed. The results show CBTS as the best HTL for Cs2BiAgI6 with all eight ETLs used in this work, resulting in a power conversion efficiency (PCE) of 19.99%, 21.55%, 21.59%, 17.47%, 20.42%, 21.52%, 14.44%, 21.43% with PCBM, TiO2, ZnO, C60, IGZO, SnO2, CeO2, WS2, respectively. The proposed strategy may pave the way for further design optimization of lead-free double perovskite solar cells.
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Affiliation(s)
- M Khalid Hossain
- Institute of Electronics, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission Dhaka 1349 Bangladesh
| | - A A Arnab
- Department of Electrical & Electronic Engineering, Ahsanullah University of Science and Technology Dhaka 1208 Bangladesh
| | - Ranjit C Das
- Materials Science and Engineering, Florida State University Tallahassee FL 32306 USA
| | - K M Hossain
- Department of Materials Science and Engineering, University of Rajshahi Rajshahi 6205 Bangladesh
| | - M H K Rubel
- Department of Materials Science and Engineering, University of Rajshahi Rajshahi 6205 Bangladesh
| | - Md Ferdous Rahman
- Department of Electrical and Electronic Engineering, Begum Rokeya University Rangpur 5400 Bangladesh
| | - H Bencherif
- HNS-RE2SD, Higher National School of Renewable Energies, Environment and Sustainable Development Batna 05078 Algeria
| | - M E Emetere
- Department of Physics and Solar Energy, Bowen University Iwo 232101 Osun Nigeria
| | - Mustafa K A Mohammed
- Radiological Techniques Department, Al-Mustaqbal University College Hillah 51001 Babylon Iraq
| | - Rahul Pandey
- VLSI Centre of Excellence, Chitkara University Institute of Engineering and Technology, Chitkara University Punjab 140401 India
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Guo Q, Zhao X, Song B, Luo J, Tang J. Light Emission of Self-Trapped Excitons in Inorganic Metal Halides for Optoelectronic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2201008. [PMID: 35322473 DOI: 10.1002/adma.202201008] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 03/14/2022] [Indexed: 06/14/2023]
Abstract
Self-trapped excitons (STEs) have recently attracted tremendous interest due to their broadband emission, high photoluminescence quantum yield, and self-absorption-free properties, which enable a large range of optoelectronic applications such as lighting, displays, radiation detection, and special sensors. Unlike free excitons, the formation of STEs requires strong coupling between excited state excitons and the soft lattice in low electronic dimensional materials. The chemical and structural diversity of metal halides provides an ideal platform for developing efficient STE emission materials. Herein, an overview of recent progress on STE emission materials for optoelectronic applications is presented. The relationships between the fundamental emission mechanisms, chemical compositions, and device performances are systematically reviewed. On this basis, currently existing challenges and possible development opportunities in this field are presented.
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Affiliation(s)
- Qingxun Guo
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei, 430074, China
- Optics Valley Laboratory, Wuhan, Hubei, 430074, China
| | - Xue Zhao
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei, 430074, China
- Optics Valley Laboratory, Wuhan, Hubei, 430074, China
| | - Boxiang Song
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei, 430074, China
- Optics Valley Laboratory, Wuhan, Hubei, 430074, China
| | - Jiajun Luo
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei, 430074, China
- Optics Valley Laboratory, Wuhan, Hubei, 430074, China
| | - Jiang Tang
- Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, Hubei, 430074, China
- Optics Valley Laboratory, Wuhan, Hubei, 430074, China
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40
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Qiu F, Lei Y, Jin Z. Copper-based metal halides for X-ray and photodetection. FRONTIERS OF OPTOELECTRONICS 2022; 15:47. [PMID: 36637610 PMCID: PMC9756229 DOI: 10.1007/s12200-022-00048-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/29/2022] [Indexed: 06/17/2023]
Abstract
Copper-based metal halides have become important materials in the field of X-ray and photodetection due to their excellent optical properties, good environmental stability and low toxicity. This review presents the progress of research on crystal structure/morphology, photophysics/optical properties and applications of copper-based metal halides. We also discuss the challenges of copper-based metal halides with a perspective of their future research directions.
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Affiliation(s)
- Fu Qiu
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Yutian Lei
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, 730000, China
| | - Zhiwen Jin
- School of Physical Science and Technology & Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou, 730000, China.
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41
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Tan J, Li D, Zhu J, Han N, Gong Y, Zhang Y. Self-trapped excitons in soft semiconductors. NANOSCALE 2022; 14:16394-16414. [PMID: 36317508 DOI: 10.1039/d2nr03935d] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Self-trapped excitons (STEs) have attracted tremendous attention due to their intriguing properties and potential optoelectronic applications. STEs are formed from the lattice distortion induced by the strong electron (exciton)-phonon coupling in soft semiconductors upon photoexcitation, which features in broadband photoluminescence (PL) emission spectra with a large Stokes shift. Recently, significant progress has been achieved in this field but many remain challenges that need to be solved, including the understanding of the underlying physical mechanism, tuning of the performance, and device applications. Along these lines, for the first time, systematic experimental characterizations and advanced theoretical calculations are presented in this review to shed light on the physical mechanism. The possibility of tuning the STEs through multiple degrees of freedom is also presented, along with an overview of the STE-based emerged applications and future research perspectives.
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Affiliation(s)
- Jianbin Tan
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
| | - Delong Li
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
| | - Jiaqi Zhu
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
| | - Na Han
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
| | - Youning Gong
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
| | - Yupeng Zhang
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, P.R. China.
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Yan SS, Kong YC, Zhang ZH, Wu ZS, Lian ZD, Zhao YP, Su SC, Li L, Wang SP, Ng KW. Enhanced Optoelectronic Performance Induced by Ion Migration in Lead-Free CsCu 2I 3 Single-Crystal Microrods. ACS APPLIED MATERIALS & INTERFACES 2022; 14:49975-49985. [PMID: 36315112 DOI: 10.1021/acsami.2c14974] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Lead-free perovskite has attracted great attention in realizing high-performance optoelectronic devices due to their excellent atmospheric stability and nontoxic characteristics. Although a pronounced ion migration effect has been observed in this new class of materials, its potential in enhancing the overall device performance is yet to be fully explored. In this work, we studied the effect of ion migrations on the carrier transport behavior and found that the recoverable migration process can contribute to enhancing the on/off ratio in a lead-free CsCu2I3 single-crystal microrod-based photodetector. In detail, we synthesized CsCu2I3 single-crystal microrods via an in-plane self-assembly supersaturated crystallization approach. These microrods with well-defined morphologies were then used to construct ultraviolet (UV)-band photodetectors, which outperform most reported lead-free perovskite photodetectors based on individual single crystals. Simultaneously, ion migration can result in asymmetric band bending in the two-terminal device, as confirmed by surface potential profiling with Kelvin probe force microscopy (KPFM). Such an effect can be harnessed to increase the on/off ratio by almost an order of magnitude. Furthermore, the lead-free CsCu2I3 single crystal exhibits excellent thermal and air stabilities. These findings demonstrate that the CsCu2I3 single-crystal microrods can be used in stable and efficient photodetection, and the ion migration effect can potentially be utilized for improving the optoelectronic performance of lead-free devices.
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Affiliation(s)
- Shan-Shan Yan
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
- College of Chemical and Material Engineering, Quzhou University, Quzhou, Zhejiang32400, China
| | - You-Chao Kong
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
| | - Zhi-Hong Zhang
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
- State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun130022, China
| | - Zhi-Sheng Wu
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
| | - Zhen-Dong Lian
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
| | - Yun-Peng Zhao
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
- Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou510631, China
| | - Shi-Chen Su
- Institute of Optoelectronic Material and Technology, South China Normal University, Guangzhou510631, China
- SCNU Qingyuan Institute of Science and Technology Innovation Co., Ltd., Qingyuan511517, China
| | - Lin Li
- Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin150025, China
| | - Shuang-Peng Wang
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
| | - Kar Wei Ng
- Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau999078, China
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Huang D, Ouyang Q, Wu J, Kong Y, Wang B, Lian H, Lin J. Growth of SnX 2 (X = Br, I) Single Crystals with Self-Trapped Exciton Emission. Inorg Chem 2022; 61:17767-17776. [DOI: 10.1021/acs.inorgchem.2c03058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dayu Huang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, P. R. China
- Key Laboratory of In-Fiber Integrated Optics, Ministry Education of China, and College of Physics and Opotoelectronic Engineering, Harbin Engineering University, Harbin150001, P. R. China
| | - Qiuyun Ouyang
- Key Laboratory of In-Fiber Integrated Optics, Ministry Education of China, and College of Physics and Opotoelectronic Engineering, Harbin Engineering University, Harbin150001, P. R. China
| | - Jinjiang Wu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, P. R. China
| | - Youchao Kong
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR999078, P. R. China
| | - Bo Wang
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR999078, P. R. China
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, P. R. China
| | - Jun Lin
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun130022, P. R. China
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Zheng GS, Shen CL, Lou Q, Han JF, Ding ZZ, Deng Y, Wu MY, Liu KK, Zang JH, Dong L, Shan CX. Meter-scale chemiluminescent carbon nanodot films for temperature imaging. MATERIALS HORIZONS 2022; 9:2533-2541. [PMID: 35829660 DOI: 10.1039/d2mh00495j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Chemiluminescence (CL), as one class of luminescence driven by chemical reaction, exhibits obvious temperature-dependence in its light emission process. Herein, temperature-dependent CL emission of carbon nanodots (CDs) in the chemical reaction of peroxalate and hydrogen peroxide is demonstrated and temperature imaging based on the temperature-dependent CL has been established for the first time. In detail, the temperature-dependent CL emission of CDs in the chemical reaction of peroxalate and hydrogen peroxide is observed, and the linear relationship between the CL intensity and temperature is demonstrated in both the CL solution and film, enabling their applications in temperature sensing and imaging capabilities. The increase of the CL emission with temperature can be attributed to the accelerated electron exchange between the CDs and intermediate generated in the peroxalate system. Meter-scale chemiluminescent CD films have been constructed. The CL sensor based on the films presents a high spatial resolution of 0.4 mm and an outstanding sensitivity of 0.08 °C-1, which is amongst the best values for the thermographic luminophores. With the unique temperature response and flexible properties, non-planar, meter-scale and sensitive palm temperature imaging has been achieved. These findings present new opportunities for designing CL-based temperature probes and thermography.
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Affiliation(s)
- Guang-Song Zheng
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Cheng-Long Shen
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Qing Lou
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Jiang-Fan Han
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Zhong-Zheng Ding
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Yuan Deng
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Meng-Yuan Wu
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Kai-Kai Liu
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Jin-Hao Zang
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Lin Dong
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | - Chong-Xin Shan
- Henan Key Laboratory of Diamond Optoelectronic Material and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
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45
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Zhang F, Zhou Y, Chen Z, Wang M, Ma Z, Chen X, Jia M, Wu D, Xiao J, Li X, Zhang Y, Shi Z, Shan C. Thermally Activated Delayed Fluorescence Zirconium-Based Perovskites for Large-Area and Ultraflexible X-ray Scintillator Screens. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2204801. [PMID: 36047911 DOI: 10.1002/adma.202204801] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Flexible scintillator screens with environmental stability, high sensitivity, and low cost have emerged as candidates for X-ray imaging applications. Here, a large-scale and cost-efficient solution synthesis of the vacancy-ordered double perovskite Cs2 ZrCl6 , which is characterized by thermal activation delayed fluorescence (TADF) dominated by triplet emission under X-ray irradiation, is demonstrated. The large Stokes shift and efficient luminescence collection of TADF effectively ensure the light outcoupling efficiency. Further, flexible X-ray scintillator screens with an area of 400 cm2 are prepared using poly(dimethylsiloxane) (PDMS) as the carrier, exhibiting excellent scintillation properties with light yields as high as 49 400 photons MeV-1 , spatial resolutions up to 18 lp mm-1 and detection limits as low as 65 nGy s-1 . Finally, the high-quality imaging results of non-planar and dynamic objects by such screens are demonstrated. It is believed that the explored Cs2 ZrCl6 @PDMS flexible scintillator screens would offer a big step toward expanding the application range of scintillators in different environments.
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Affiliation(s)
- Fei Zhang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yingchun Zhou
- Institute of Microstructure and Property of Advanced Materials, Beijing Key Lab of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Zhipeng Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Meng Wang
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Jiawen Xiao
- Institute of Microstructure and Property of Advanced Materials, Beijing Key Lab of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124, China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Yu Zhang
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou, 450052, China
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46
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Zhang F, Min H, Zhang Y, Kuang Z, Wang J, Feng Z, Wen K, Xu L, Yang C, Shi H, Zhuo C, Wang N, Chang J, Huang W, Wang J. Vapor-Assisted In Situ Recrystallization for Efficient Tin-Based Perovskite Light-Emitting Diodes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2203180. [PMID: 35906760 DOI: 10.1002/adma.202203180] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/10/2022] [Indexed: 06/15/2023]
Abstract
Tin-based perovskites are a promising candidates to replace their toxic lead-based counterparts in optoelectronic applications, such as light-emitting diodes (LEDs). However, the development of tin perovskite LEDs is slow due to the challenge of obtaining high-quality tin perovskite films. Here, a vapor-assisted spin-coating method is developed to achieve high-quality tin perovskites and high-efficiency LEDs. It is revealed that solvent vapor can lead to in situ recrystallization of tin perovskites during the film-formation process, thus significantly improving the crystalline quality with reduced defects. An antioxidant additive is further introduced to suppress the oxidation of Sn2+ and increase the photoluminescence quantum efficiency up to ≈30%, which is an approximately fourfold enhancement in comparison with that of the control method. As a result, efficient tin perovskite LEDs are achieved with a peak external quantum efficiency of 5.3%, which is among the highest efficiency of lead-free perovskite LEDs.
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Affiliation(s)
- Fang Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Hao Min
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Ya Zhang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Zhiyuan Kuang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Jiaqi Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Ziqian Feng
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Kaichuan Wen
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Lei Xu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Chao Yang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Haokun Shi
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Chunxue Zhuo
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Nana Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Jin Chang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an, Shaanxi, 710072, China
- Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, Fujian, 350117, China
| | - Jianpu Wang
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, Jiangsu, 211816, China
- Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou, Fujian, 350117, China
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47
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Ma Z, Ji X, Wang M, Zhang F, Liu Z, Yang D, Jia M, Chen X, Wu D, Zhang Y, Li X, Shi Z, Shan C. Carbazole-Containing Polymer-Assisted Trap Passivation and Hole-Injection Promotion for Efficient and Stable CsCu 2 I 3 -Based Yellow LEDs. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202408. [PMID: 35780486 PMCID: PMC9507358 DOI: 10.1002/advs.202202408] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Indexed: 05/05/2023]
Abstract
Perovskite light-emitting diodes (LEDs) are emerging light sources for next-generation lighting and display technologies; however, their development is greatly plagued by difficulty in achieving yellow electroluminescence, environmental instability, and lead toxicity. Copper halide CsCu2 I3 with intrinsic yellow emission emerges as a highly promising candidate for eco-friendly LEDs, but the electroluminescent performance is limited by defect-related nonradiative losses and inefficient charge transport/injection. To solve these issues, a hole-transporting poly(9-vinlycarbazole) (PVK)-incorporated engineering into CsCu2 I3 emitter is proposed. PVK with carbazole groups is permeated at the grain boundaries of CsCu2 I3 films by interacting with the uncoordinated Cu+ , reducing the CuCs and CuI antisite defects to increase the radiative recombination and enhancing the hole mobility to balance the charge transport/injection, resulting in substantially enhanced device performances. Eventually, the yellow LEDs exhibit an 8.5-fold enhancement of external quantum efficiency, and the half-lifetime reaches 14.6 h, representing the most stable yellow LEDs based on perovskite systems reported so far.
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Affiliation(s)
- Zhuangzhuang Ma
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Xinzhen Ji
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Meng Wang
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Fei Zhang
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Zibin Liu
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Dongwen Yang
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Mochen Jia
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Xu Chen
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Di Wu
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Yu Zhang
- State Key Laboratory on Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin UniversityQianjin Street 2699Changchun130012China
| | - Xinjian Li
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Zhifeng Shi
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
| | - Chongxin Shan
- Key Laboratory of Materials Physics of Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityDaxue Road 75Zhengzhou450052China
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48
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Ye D, Li Z, Chen W, Ighodalo KO, Xiao P, Chen T, Xiao Z. Stable Yellow Light-Emitting Diodes Based on Quasi-Two-Dimensional Perovskites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34918-34925. [PMID: 35868005 DOI: 10.1021/acsami.2c07314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Perovskite light-emitting diodes (PeLEDs) show great potential in display and lighting because of their tunable wavelength, narrow emission bandwidths, and high color purity. Currently, the external quantum efficiency (EQE) of red and green PeLEDs has reached >23%. However, yellow PeLEDs are still rarely reported because of phase separation in mixed-halide perovskites and the coexistence of multiple phases in quasi-two-dimensional (quasi-2D) perovskites L2An-1BnX3n+1 (n = 1, 2, 3, ...), where L is a bulky organoammonium ligand. Here, we fabricate stable yellow PeLEDs by manipulating the phase distribution and incorporating rubidium cations (Rb+) in quasi-2D perovskites. The transient absorption results confirm that alkylammonium ligand butyl ammonium (BA) has a narrower phase distribution than phenylethyl ammonium (PEA) in the quasi-2D perovskites, resulting in a more blue-shifted emission peak. We further incorporate a proper molar ratio of Rb+ in the (BA)2CsPb2I7 perovskite to blue-shift the emission peak to the yellow range. Finally, the yellow PeLEDs exhibit an EQE of 3.5%, and the stable emission peak is located at 595 nm. Our work provides a useful approach for the fabrication of highly efficient and stable yellow PeLEDs.
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Affiliation(s)
- Dan Ye
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhijian Li
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Wenjing Chen
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Kester O Ighodalo
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Peng Xiao
- Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tao Chen
- Department of Materials Science and Engineering, CAS Key Laboratory of Materials for Energy Conversion, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhengguo Xiao
- Department of Physics, CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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49
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Li M, Cao C, Liu W, Wang N, Yi C, Li R, Wang J. Orientation Regulation of One-Dimensional CsCu 2I 3 Perovskites for Visible-Blind Ultraviolet Photodetectors. J Phys Chem Lett 2022; 13:6462-6467. [PMID: 35816700 DOI: 10.1021/acs.jpclett.2c01715] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ternary copper halides with a formula of CsCu2X3 (X = Cl, Br, I) have been considered as prospective materials for ultraviolet (UV) photodetectors, due to their suitable band gaps, environmental stability, eco-friendliness, and low cost. However, the crystal orientation of one-dimensional (1D) CsCu2X3 perovskites significantly affects the exciton/carrier transport in the films and thus the photodetector performance. Here, we tune the crystal orientation and exciton/charge transport of 1D CsCu2I3 perovskite films by using antisolvents during the film formation process. Compared to the randomly oriented film treated by ethyl acetate, the CsCu2I3 film using toluene as antisolvent exhibits preferential (221)-oriented growth, which induces enhanced vertical exciton diffusion/charge transport and suppressed nonradiative recombination. On the basis of this strategy, we demonstrate a self-powered, stable, and visible-blind UV photodetector with significantly enhanced response speed and detectivity. Our work clarifies that tuning the crystal orientation of 1D CsCu2X3 perovskites is the key to achieve efficient exciton diffusion/charge transport and thus high-performance lead-free perovskite optoelectronic devices.
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Affiliation(s)
- Mingda Li
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Chensi Cao
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Wenbo Liu
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Nana Wang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Chang Yi
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Renzhi Li
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
| | - Jianpu Wang
- Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
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50
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Li Y, Zhou Z, Xing Z, Wong KS, Sung HHY, Williams ID, Halpert JE. Highly Stable Tetrahydrothiophene 1-Oxide Caged Copper Bromide and Chloride Clusters with Deep-Red to Near-IR Emission. Inorg Chem 2022; 61:10950-10956. [PMID: 35772078 DOI: 10.1021/acs.inorgchem.2c01542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
All-inorganic copper(I)-based metal halides have emerged as promising candidates for the replacement of lead perovskites because of their outstanding optical properties. However, the limited structure tunability prohibits their further exploration of properties including red photoluminescence (PL). Here, we report a series of red-emissive lead-free hybrid organic-inorganic copper halides A6(C4H8OS)12[Cu8X13][Cu4X4(OH)(H2O)] (ACX-THTO, A = K, Rb, and Cs; X = Cl, Br; THTO = C4H8OS) with the highest photoluminescence quantum yield (PLQY) of 42%. These compounds possess similar crystal structures, and their emission can be tuned in the spectral range of 676-732 nm by controlling their compositions. Additionally, by removing and adding THTO, the reversible transformation between CsCu2Br3 featuring one-dimensional (1D) chains and Cs6(C4H8OS)12[Cu8Br13][Cu4Br4(OH)(H2O)] (CCB-THTO) with zero-dimensional (0D) clusters can be realized. We also demonstrate that the incorporation of THTO in the crystal structures instead of dimethyl sulfoxide (DMSO) can significantly enhance the stability and PL of compounds with the same inorganic components.
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Affiliation(s)
- Yanyan Li
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Zhicong Zhou
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Zengshan Xing
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Kam Sing Wong
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Herman H Y Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Ian D Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
| | - Jonathan E Halpert
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon 999077, Hong Kong, China
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